Phone Behavior During Times Of Network Congestion - Cisco 7800 Series Administration Manual

About the Cisco IP Phone
• Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of external devices, cables, and connectors.
Caution In European Union countries, use only external speakers, microphones, and headsets that are fully compliant
with the EMC Directive [89/336/EC].

Phone Behavior During Times of Network Congestion

• Administrative tasks, such as an internal port scan or security scan
• Attacks that occur on your network, such as a Denial of Service attack
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
Phone Behavior During Times of Network Congestion
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